options: temporarily fix text rendering bug in overlays.

R=reveman@chromium.org
BUG=372765
TEST=visual

Review URL: https://codereview.chromium.org/295713004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271580 0039d316-1c4b-4281-b951-d872f2087c98

ui/webui/resources/css/overlay.css

@@ -7,6 +7,8 @@
   -webkit-box-align: center;
   -webkit-box-orient: vertical;
   -webkit-box-pack: center;
+  /* TODO(dbeam): remove perspective when http://crbug.com/374970 is fixed. */
+  -webkit-perspective: 1px;
   -webkit-transition: 200ms opacity;
   background-color: rgba(255, 255, 255, 0.75);
   bottom: 0;